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/*
* PSn00bSDK SPU library
* (C) 2019-2023 Lameguy64, spicyjpeg - MPL licensed
*/
/**
* @file psxspu.h
* @brief SPU library header
*
* @details The PSn00bSDK SPU library allows for SPU initialization, DMA
* transfers (both sample data uploads and capture buffer reads) and provides
* helper macros for accessing SPU control registers, which can be used to
* control sample playback on each channel, configure reverb and enable more
* advanced features such as interrupts.
*
* This library currently has fewer functions than its Sony SDK counterpart, in
* part because it is not yet complete but also since the vast majority of the
* Sony library's functions are redundant, inefficient and can be replaced with
* simple SPU register writes.
*/
#pragma once
#include <stdint.h>
#include <stddef.h>
#include <hwregs_c.h>
/* Definitions */
#if 0
typedef enum _SPU_AttrMask {
SPU_VOICE_VOLL = 1 << 0, // Left volume
SPU_VOICE_VOLR = 1 << 1, // Right volume
SPU_VOICE_VOLMODEL = 1 << 2, // Left volume mode
SPU_VOICE_VOLMODER = 1 << 3, // Right volume mode
SPU_VOICE_PITCH = 1 << 4, // Pitch tone
SPU_VOICE_NOTE = 1 << 5, // Pitch note
SPU_VOICE_SAMPLE_NOTE = 1 << 6, // Sample base frequency?
SPU_VOICE_WDSA = 1 << 7, // Sample start address (in SPU RAM)
SPU_VOICE_ADSR_AMODE = 1 << 8, // ADSR attack mode
SPU_VOICE_ADSR_SMODE = 1 << 9, // ADSR sustain mode
SPU_VOICE_ADSR_RMODE = 1 << 10, // ADSR release mode
SPU_VOICE_ADSR_AR = 1 << 11, // ADSR attack rate
SPU_VOICE_ADSR_DR = 1 << 12, // ADSR decay rate
SPU_VOICE_ADSR_SR = 1 << 13, // ADSR sustain rate
SPU_VOICE_ADSR_RR = 1 << 14, // ADSR release rate
SPU_VOICE_ADSR_SL = 1 << 15, // ADSR sustain level
SPU_VOICE_LSAX = 1 << 16, // Loop start address (in SPU RAM)
SPU_VOICE_ADSR_ADSR1 = 1 << 17,
SPU_VOICE_ADSR_ADSR2 = 1 << 18
} SPU_AttrMask;
#endif
typedef enum _SPU_TransferMode {
SPU_TRANSFER_BY_DMA = 0,
SPU_TRANSFER_BY_IO = 1
} SPU_TransferMode;
typedef enum _SPU_WaitMode {
SPU_TRANSFER_PEEK = 0,
SPU_TRANSFER_WAIT = 1
} SPU_WaitMode;
/* Structure definitions */
#if 0
typedef struct _SpuVolume {
int16_t left, right;
} SpuVolume;
typedef struct _SpuVoiceAttr {
uint32_t voice;
uint32_t mask;
SpuVolume volume, volmode, volumex;
uint16_t pitch, note, sample_note;
int16_t envx;
uint32_t addr, loop_addr;
int a_mode, s_mode, r_mode;
uint16_t ar, dr, sr, rr, sl;
uint16_t adsr1, adsr2;
} SpuVoiceAttr;
typedef struct _SpuExtAttr {
SpuVolume volume;
int reverb, mix;
} SpuExtAttr;
typedef struct _SpuCommonAttr {
uint32_t mask;
SpuVolume mvol, mvolmode, mvolx;
SpuExtAttr cd, ext;
} SpuCommonAttr;
#endif
/* Macros */
#define getSPUAddr(addr) ((uint16_t) (((addr) + 7) / 8))
#define getSPUSampleRate(rate) ((uint16_t) (((rate) * (1 << 12)) / 44100))
#define getSPUADSR(ar, dr, sr, rr, sl) ( \
(sl) | \
((dr) << 4) | \
((ar) << 8) | \
((rr) << 16) | \
((sr) << 22) | \
(1 << 30) \
)
/* "Useless" macros for official SDK compatibility */
#define SpuSetCommonMasterVolume(left, right) \
(SPU_MASTER_VOL_L = (left), SPU_MASTER_VOL_R = (right))
#define SpuSetCommonCDVolume(left, right) \
(SPU_CD_VOL_L = (left), SPU_CD_VOL_R = (right))
#define SpuSetCommonCDReverb(enable) \
((enable) ? (SPU_CTRL |= 0x0004) : (SPU_CTRL &= 0xfffb))
#define SpuSetCommonExtVolume(left, right) \
(SPU_EXT_VOL_L = (left), SPU_EXT_VOL_R = (right))
#define SpuSetCommonExtReverb(enable) \
((enable) ? (SPU_CTRL |= 0x0002) : (SPU_CTRL &= 0xfffd))
#define SpuSetReverbAddr(addr) \
(SPU_REVERB_ADDR = getSPUAddr(addr))
#define SpuSetIRQAddr(addr) \
(SPU_IRQ_ADDR = getSPUAddr(addr))
#define SpuSetVoiceVolume(ch, left, right) \
(SPU_CH_VOL_L(ch) = (left), SPU_CH_VOL_R(ch) = (right))
#define SpuSetVoicePitch(ch, pitch) \
(SPU_CH_FREQ(ch) = (pitch))
#define SpuSetVoiceStartAddr(ch, addr) \
(SPU_CH_ADDR(ch) = getSPUAddr(addr))
#define SpuSetVoiceADSR(ch, ar, dr, sr, rr, sl) ( \
SPU_CH_ADSR1(ch) = (sl) | ((dr) << 4) | ((ar) << 8), \
SPU_CH_ADSR2(ch) = (rr) | ((sr) << 6) | (1 << 14) \
)
#define SpuSetKey(enable, voice_bit) \
((enable) ? ( \
SPU_KEY_ON1 = (uint16_t) (voice_bit), \
SPU_KEY_ON2 = (uint16_t) ((voice_bit) >> 16) \
) : ( \
SPU_KEY_OFF1 = (uint16_t) (voice_bit), \
SPU_KEY_OFF2 = (uint16_t) ((voice_bit) >> 16) \
))
/* Public API */
#ifdef __cplusplus
extern "C" {
#endif
void SpuInit(void);
size_t SpuRead(uint32_t *data, size_t size);
size_t SpuWrite(const uint32_t *data, size_t size);
size_t SpuWritePartly(const uint32_t *data, size_t size);
SPU_TransferMode SpuSetTransferMode(SPU_TransferMode mode);
uint32_t SpuSetTransferStartAddr(uint32_t addr);
int SpuIsTransferCompleted(int mode);
#ifdef __cplusplus
}
#endif
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